Reminder: Action Required: Update OneNote to Ensure Seamless and Secure Sync
Update OneNote to the latest version to ensure seamless and secure sync due to infrastructure upgrades completed in June 2025. Users on older versions may experience sync issues. Refer to the Microsoft Support article for troubleshooting. All OneNote platforms are affected. Contact Microsoft support for further assistance. As previously announced in MC1035701 (March ’25), we’re upgrading OneNote’s sync infrastructure to deliver improved security, performance, and reliability across all supported platforms — including OneNote for Windows, Mac, iOS, Android, and OneNote for Windows 10. To benefit from these enhancements, users must be on the latest version of OneNote. When this will happen: The rollout completed at the end of June 2025 How this affects your organization: Users on older versions of OneNote may experience sync interruptions, including: Notebooks opening as read-only with a “Refresh” prompt Messages like “Saved offline – Refresh” Sync error messages with code E000006C (cig68) These issues will persist until users update their apps or click the “Refresh” prompt. This behavior is expected as we transition to the new sync infrastructure. What you can do to prepare: Recommended: Ensure all users are on the latest version of OneNote to enable a seamless transition with no disruption. Support users on older builds: If immediate updates aren’t possible, users can continue using OneNote, but sync behavior will vary: Build Version Sync Behavior ≥ 2410 (Oct 2024) Seamless automatic transition ≥ 2403 (Mar 2024) Notebooks may open read-only with refresh prompts ≥ 2211 (Nov 2022) Editing allowed, but users will see a refresh Infobar < 2211 Sync error (E000006C) Update required to resume syncing Refer affected users to the following Microsoft Support article for troubleshooting guidance Fix issues when you can’t sync OneNote. Impacted platforms: All OneNote platforms are affected: OneNote for Windows OneNote for Mac OneNote for iOS OneNote for Android OneNote Online OneNote for Windows 10 (Note: this app reaches end of support in October 2025) For additional support, contact your Microsoft support team or use Help > Support within OneNote on Windows. Message ID: MC1108842
The post Reminder: Action Required: Update OneNote to Ensure Seamless and Secure Sync appeared first on M365 Admin.
Published on:
Learn moreWe can help you with Reminder: Action Required: Update OneNote to Ensure Seamless and Secure Sync
If you want help implementing, troubleshooting, or improving this product, contact us and we’ll point you in the right direction.
Related posts
Change in sender email address for Copilot emails
Microsoft is updating the sender email for Copilot-related educational and enablement emails to [email protected] by mid-S...
Microsoft Purview: Information Protection – Auto-labeling simulation scale increase from 4 million to 20 million items
Microsoft Purview Information Protection increases auto-labeling simulation capacity from 4 million to 20 million items, expands SharePoint si...
Microsoft Exchange Online: Review and configure EWSAllowedAppIDs before Exchange Web Services access changes
Microsoft is updating how EWSAllowedAppIDs is applied in Exchange Online as part of EWS retirement starting October 1, 2026. Organizations usi...
IT resources to plan, prepare, and deploy Windows
New and updated resources are available whether you’re a seasoned IT pro or earlier in your career. Learn how to effectively roll out feature ...
[Whiteboard] Legacy Whiteboard migration to OneDrive
Microsoft Whiteboard is migrating from legacy Azure-based storage to OneDrive-backed storage. Migration must be completed by September 25, 202...
Microsoft Teams: Organize important resources in chats and channels
Microsoft Teams is introducing a new way to organize and access important resources in chats and channels. Users will be able to pin key conte...
Microsoft Teams: Analytics for desk utilization on Teams Pro Management portal
Teams admins can access utilization analytics for Teams bookable desks on Teams Pro Management portal, similar to analytics provided for meeti...
Outlook: Inline chat for email drafting
Instead of opening Copilot Chat every time you want to use Copilot to draft a message, this change introduces an inline chat component that st...
SharePoint: Changes to the FAQ web part authoring experience
The SharePoint FAQ web part will provide a standard, non-AI experience for manually creating, editing, and managing FAQs. The AI-assisted FAQ ...
Microsoft Teams: Multi-line call history tabs in the Calls app
Multi-line users get a redesigned call history experience that organizes activity by phone line. Call activity is organized into dedicated tab...